package com.blogs.web.shejimoshi.danli.dongtai;

import java.io.FileReader;

/**
 * @Author: xiaokai
 * @Description:
 * @Date: 2019/8/13
 * @Version: 1.0
 */
class person {
    public static String format(String old){
        return old +"_invoice";
    }
}


class p {
    static int a;
    public  String format(String old){
        int b =this.a;
        return old +"_in";
    }
}



enum a{
    aaa,bbb
        }
public class Test {
    public static void main(String[] args) {
//        int c ="123".indexOf(null);
        System.out.println(a.aaa);




    }

}
